Selecting the right PPE so your cleanroom is safe and successful

Many common products — from smartphones to medical devices to medications — must be manufactured in cleanroom environments. Because these products are delicate and in some cases potentially harmful to those handling them, cleanrooms are highly controlled and regulate conditions such as air quality and flow, temperature, and humidity. 

The ultimate goal of a cleanroom is, of course, that it remains clean. There are different levels of “clean” that a cleanroom must adhere to, as determined by the International Organization for Standardization (ISO) Standard 14664-1:2015. ISO identifies nine classes of cleanroom, and ISO 14664 contains 10 parts that outline standards for cleanroom elements such as air cleanliness by particle concentration, test methods, design, construction, and start-up. 

But it’s not enough for a manufacturer to design and build a cleanroom that meets the ISO standards of its determined ISO class. They also must consider that employees responsible for handling materials while in the cleanroom – whether chemicals, microchips, or medical devices – can introduce particles into the environment from their skin or non-cleanroom clothing, or even from the personal protective equipment (PPE) they wear while in the room. Knowing your class of cleanroom is important and can influence the type of PPE that you will need, which typically includes: 

  • Gloves 

  • Coveralls 

  • Hoods 

  • Overboots 

  • Caps

  • Face masks 

  • Helmets 

  • Goggles or safety glasses 



Special attention should be paid to gloves, as almost all classes require them and they are the piece of PPE that covers the part of the body closest to the given product and working surfaces. For employees working in aseptic pharmaceutical cleanrooms where they may be handling medicines or chemicals, it is especially important to ensure sterility and protection. For those working in semiconductor cleanrooms handling sensitive electronics, it’s important to have a glove that has low particle counts, such as HALYARD* PUREZERO* Nitrile Gloves, which guarantee low particle counts (max 950 > 0.5μm/cm2 for white gloves, max 1200 > 0.5μm/cm2 for blue gloves). 

Cleanroom managers should consider the properties of their cleanroom gloves based on the ISO class of the room and what they are making, including surface contamination, sterility, tactility, strength, comfort, fit, and how they are packaged. They should also consider the material, which can have implications for worker safety. 

Nitrile gloves offer added protection against chemical splash, micro-organisms, and viruses. But nitrile and other non-latex gloves can cause Type IV skin allergies in some workers, which are typically attributed to Sulphur-based chemical accelerators (predominantly thiazoles, thiurams, and carbamates) that are used to ensure rapid vulcanization of the polymers in nitrile or other non-latex exam gloves. These chemical allergies represent approximately 30 percent of occupationally induced skin diseases — and it is the second-largest occupational disability reported to OSHA. 

Therefore, cleanroom manufacturers may want to consider a glove such as HALYARD* PUREZERO* Nitrile Gloves, which are manufactured with an accelerator-free formulation.

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